Few consumers have been attracted to "clean" cars--those powered by something other than traditional internal combustion engines--because they aren"t satisfied yet with critical factors such as appearance (too odd), cost (too high), dependability (too uncertain), and performance (too limited). The times they are a-changing, however. A host of catalysts, including new legal requirements and shifting public opinion, is finally driving automakers toward relevant alternative technologies that actually date back 160 years. And Jim Motavalli, who travels an unusual professional route as both syndicated auto columnist and environmental reporter, chronicles the buildup and potential payoff in his intriguing book Forward Drive. "The information I came across ... described a personal transportation revolution that was becoming tantalizingly close," he writes. "Here, at last, were vehicles that promised to not only greatly reduce pollution but also to perform better, be more reliable, cruise farther, and last much longer than anything the public had ever seen." Written for those "who"d somehow failed to get their engineering Ph.D.s," it absorbingly examines the history of such vehicles, the impact of gasoline automobiles, the pioneers who already utilize alternative power, the large and small R&D operations, the political and financial forces under which everything operates, and the broader picture of sustainable transportation. --Howard Rothman